The Knight of Pentacles is the Lord of the Wild and Fertile Land and King of the Spirits of Earth. He brings in the Earth energies found in the astrological signs of Taurus, Virgo and Capricorn and represents material progress, sense orientation and productivity.
The Knight of Pentacles is the only Knight usually depicted in the Tarot as not in motion - he is more slow moving and steady than the other Knights, neither headstrong or flighty, but cautious, sensible and reliable.
He may be a little dull to those who are looking for excitement and variety, but ultimately he is someone who can be trusted to be there for the long haul.
The Knights of the Tarot bring movement towards one's desires, and there is always something coming your way when you see them in a reading. Its just that the change that is coming with the Knight of Pentacles is practical, useful and not at all what one would associate with adventure, as with the other Knights.
There is also an indication when this Knight appears to look after matters of health. It is your opportunity to make a positive change where your health is concerned, and it means you need to take action towards healing and recovery.
The Knight of Pentacles asks you to look at where you need to face responsibilities in your life, where you need to be dependable, reliable and true to your word. The long term effects of decisions you make now may not be apparent, and yet they will make themselves known in time so it is advisable to keep your future happiness and security in mind when you are making choices in the short term.
As a lover this Knight is certainly a steady influence, reliable and faithful, if a little dull and unromantic. The Earth energy in areas of the heart takes longer to kindle, and yet when it takes off it will burn for a long time - if romance is in the air with this Knight then be sure that you are willing to be as serious as he, for he is in it for the long haul.
More generally this Knight brings you the opportunity to develop those qualities of trustworthiness, loyalty and patience that bring long term rewards in every area of life.
Image from "Celtic Tarot" © Giacinto Gaudenzi, S. Tenuta, Lo Scarabeo